Glib or tongue-in-cheek?

I was doodling around with word art and lettering - the usual subjects being interesting words or quotes.  I came upon this one and doodled it:

Mixed media

I have very little experience with kittens and cats therefore I was wondering if Ogden Nash was being glib or perhaps just tongue-in-cheek.

I would wholly disagree if this had been said about puppies and dogs because a dog is just a more wonderful version of a puppy :-)